196377491025 has 81 divisors (see below), whose sum is σ = 363827940177. Its totient is φ = 101249769600.

The previous prime is 196377491003. The next prime is 196377491053. The reversal of 196377491025 is 520194773691.

The square root of 196377491025 is 443145.

It is a perfect power (a square), and thus also a powerful number.

196377491025 is a `hidden beast` number, since 1 + 9 + 63 + 77 + 491 + 0 + 25 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9846791361 + 186530699664 = 99231^2 + 431892^2 .

It is not a de Polignac number, because 196377491025 - 2⁵ = 196377490993 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 206061949 + ... + 206062901.

Almost surely, 2^196377491025 is an apocalyptic number.

196377491025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

196377491025 is the 443145-th square number.

196377491025 is the 221573-rd centered octagonal number.

It is an amenable number.

196377491025 is a deficient number, since it is larger than the sum of its proper divisors (167450449152).

196377491025 is an frugal number, since it uses more digits than its factorization.

196377491025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984 (or 992 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The spelling of 196377491025 in words is "one hundred ninety-six billion, three hundred seventy-seven million, four hundred ninety-one thousand, twenty-five".